So we have a 920 that will not play any music since it was updated. It will not stream Through Pandora or play any stored music through Xbox music. End up getting an error message in Xbox music after it tries to open a song for a bit. This has all just been since applying 8.1. I have tried a soft reset but that hasn't helped. It's also occasionally freezing up now as well. Any ideas what's going on here and what I can do?